Question # 1

Which of the following has highest M.P

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Aluminium

Silicon

Phosphorus

Sulphur

Which property of hydrogen not resemble to alkali metals.

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Electronic configuration

Oxidation state

Reaction with halogen

Metallic nature

Which the correct statement

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Cl^-is smaller than Cl atom

Cl^-(Ion) and Cl (atom) are equal in size

Na⁺is smaller than Na atom

Na⁺is larger than Na atom

Electron affinity is measure of energy

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Required to remover the electron

Released by adding an electron

Required to excite an electron

Released by removing an electron

Which element when react with chlorine form polymeric halide.

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Na

Be

Ba

P

In modern periodic table VI period contains elements

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8

18

10

32

In which compound, oxidation state of sulphur is +6

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H2S

H2SO4

H2SO3

SO3

In which block of periodic table non metals are present.

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s

p

d

f

Majority of the elements of the periodic table are.

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Semi metals

Non metals

Metals

Noble metals

Hydrogen resembles in properties with

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IA, IV A and VII A elements

III A, IV A and V A elements

II A, IV A and VI A elements

II A, III A and VII A elements

Which element has lowest melting point

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Beryllium

Magnesium

Calcium

Barium

The element of 2nd period, which has highest ionization energy from the following is

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Be

C

N

O

Which one of the following elements burns in air to form an oxide which, when shaken with water, give a solution with a pH greater than 7.

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Carbon

Magnesium

sulphur

Hydrogen

Which one of the following elements has the largest second ionization energy.

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O

Na

F

Ne

What are the total numbers of periods in the modern periodic table

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3

5

7

8

In which group, melting point and boiling point increase downward in a group

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IA

II A

VII A

Both a and b

Variable valency is generally exhibited by

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Transition elements

Alkali metals

s-block elements

Gaseous elements

Which class of elements shows law value of first ionization potential.

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Alkali metals

Alkaline earth metals

Halogens

Noble gases

Which one of the following sets has coinage metaals is it.

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Cu, Hg, Au

Cu, Ag, Au

Ag, Au, Hg

Cu, Fe, Au

In which one of the following sets do all three particles have same number of total electrone

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F- ,Cl-,Br-

Li+ , Na+ , K+

N^--3, O-2, F-,

Na+, Mg+2, K+

Which one is an incomplete period

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4th

5th

6th

7th

Which one of the following oxides is amphoteric in nature.

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MgO

Na2O

SO2

ZnO

Which statement is incorrect.

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All the metals are good conductors of electricity

All the metals are good conductor of heat

All the metal form positive ions

All the metal form acidic oxides

Elements of Groups IIA are called

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Alkali metals

Alkaline earth metals

Coinage metals

Halogens

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